UWB Packet Header Timing for More Accurate Transmitter Positioning
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Solution Overview
Problem
Existing ultra-wideband (UWB) systems discard timing and phase data from incomplete packets due to unreliable data portions, limiting accuracy and range in transmitter location determination.
Innovation Solution
Utilize the header portion of incomplete UWB packets, which includes timing and phase data, by comparing time of arrival across receivers to identify the transmitter and extend the range by incorporating data from receivers that only receive the header portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If timing data from incomplete packets (header only) is discarded to maintain data reliability, then measurement precision is preserved, but the quantity of usable data points decreases, reducing location determination accuracy
Solution Approach 1:
The patent segments the packet into header portion and data portion, recognizing that the header contains reliable timing information even when the data portion is corrupted or missing. This segmentation allows the system to extract useful timing data from incomplete packets by focusing only on the reliable header section.
Solution Approach 2:
The patent extracts timing information specifically from the header portion of packets, separating this reliable data from the potentially corrupted data portion. By taking out only the necessary timing data from the header, the system can utilize incomplete packets without being affected by data portion errors.
2Measurement precision
If more receivers are deployed to improve location determination accuracy, then measurement precision improves, but device complexity and system cost increase
Solution Approach 1:
The patent changes the parameter of data utilization by accepting and processing incomplete packets (header only) in addition to complete packets. This parameter change allows the system to achieve better location accuracy with the same number of receivers, effectively reducing the need for additional hardware.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances accuracy and range of transmitter location determination by utilizing timing data from incomplete packets, allowing for more precise calculations with fewer receivers and reduced system density.
Implementation Method 1
transmitting a radio signal packet from a transmitter, wherein the packet comprises a header portion
Implementation Method 2
comparing the time of arrival at receivers that only receive the header portion with those that receive both header and data portions
Data Source
AI summary
A system and method for using timing data from an incomplete packet to more accurately determine the position of a transmitter in a workspace is provided. A radio signal packet comprising a header portion containing timing data, and a data portion, is transmitted from a transmitter. Upon successful receipt by at least one receiver in a known location, header portions from incomplete receptions at other receivers are correlated to the transmission. Timing data from the correlated, and incomplete, receptions are then used by a location determining algorithm to improve position accuracy and extend the range of the system.